AAS 207th Meeting, 8-12 January 2006
Session 52 Galaxy Surveys
Oral, Monday, 2:30-4:00pm, January 9, 2006, Delaware B

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[52.08] Ultradeep Spitzer IRS Spectroscopy in the GOODS Southern Field

H.I. Teplitz, L. Armus, R. Chary, J. W. Colbert, D. Frayer (Spitzer Science Center), V. Desai, A. Blain (Caltech), H. Spoon (Cornell), V. Charmandaris (U. of Crete), A. Pope, D. Scott (U. British Columbia)

We present the deepest spectra taken to date by the Infrared Spectrometer (IRS) on the Spitzer Space Telescope. We targeted two faint (~0.15 mJy) sources in the Southern GOODS field, at z=1.09 and z=2.69, as likely star-forming galaxies. Spectra of the lower redshift target were taken in 8-21 micron range (short-low first order and long-low second order), while the higher redshift target was observed from 21-37 microns (long-low first order). Observing times were 3 and 9 hours on-source for SL-1 and LL-2, respectively, and 12 hours for LL-1. We detect strong PAH emission in both targets. We compare the spectra to those of local galaxies observed by the IRS.

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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.